Detachable-handle construction.



J. M. LEE.

DETACHABLE HANDLE CONSTRUCTION. APPLICATIONFILED DEC-4.19M.

1,266,832. I. Paented1&fay21,l918.

- To all whom it may concern:

Joan M. we, or srnncnia, Iowa.

DETACHABLE -HANDLE CONSTRUCTION;

Specification of Letters Patent.

Patented May 21, T913.

Application filed December 4, 1917. Serial No. 205,466.

Be it lmown that 1, JOHN M. LEE, a citizen of the United States, and resident of Spencer, in the county of Clay and State of Iowa, have invented a certain new and useful Detachable Handle Construction, of

which the followin is a specification. I

My invention re ates to detachable handles for instruments, tools and-the like.

The object of my invention is to provide a detachable handle and coacting instrument or tool member, such for instance as a surgeons knife blade, the blade or the like and the handle, having coaoting parts whereby the blade may befirmly and rigidly locked to the handle without the use of tools, or

special instruments, which coacting parts permit the ready and easy separation of the handle and blade or the like.

More particularly it is my object toopro vide a handle having holding and locking pins or lugs thereon in connection with 'a blade or other instrument or tool having coacting, engaging parts such, for instance, as

openings of proper size and location to coact with said lugs or pins in connecting with a locking cover plate or the like adapted to be mounted on the handle and blade in such manner as to be firmly locked to the handle and to firmly lock the blade to the handle.

With these and other objects in view my invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, ointed out in my claim and illustrated in t e accompanying drawings, in which: I

Figure 1 shows a plan view of a handle and a knife blade embodying my invention.

Fig. 2 shows a front elevation of the same. Fig. 3 shows an enlarged, detail view of a portion of thelocking plate.

Fig. 4 shows a detail, sectional-view taken on the line 4-4 of Fig. 1.

Fig. 5 shows a detail, sectional view taken on the line 55 of Fig. 2; and Fig. 6 shows an enlarged, plan view of a portion of the handle with the blade shank thereon, the locking plate-being omitted.

In the illustration of my invention shown in the accompanying drawings, I have used the reference numeral 10 to indicate gen-. erally the body of a handle formingpart of my invention 1 The handle 10 has at one end a portion 11 thinner than the body of the handle.

At the handle end of the portion 11 is a shoulder 12 beveled from its inner portion outwardly and toward the instrument end of the device. The portion,1l has preferably near the shoulder 12 an upwardly extending pin-13 and another pin 14 preferably near its free end extending upwardly. The pin 14 is preferably larger than the pin 13 and has on opposite sides spaced from the portion 11 opposite flanges 15 extending transversely of'the handle. The pin 13 and the main body of the pin'14 are cylindrical.

In-Fig. 1 I have. shown the handle resting on one side and I will for convenience sake call the lower edge of the handle, as

. shown in Fig. 1, its front edge.

The shoulder .12 extends from the rear to the front edge ofthe handle 10 and is preferably. inclined from a transverse line, as

illustrated in Figs. 1 and 6.

My improved handle may be used with a great variety of instruments and tools. For purposes of illustration I have 'shoyvn the handle used with asurgeons knife blade 16 having a shank 17 The shank 17- has its. freeend inclined from a transverse line as at 18 and is formed with a hole 19 designed to receive the pin 13'. The shank 17 is also formed with a longitudinally, elongated slot 20, the width of which is such as to snugly receive the pin 14. The length of the slot 20 is such that when the shank is placed transversely across the portion 11', the slot 20 will receivethe flanges 15 and the pin 14, permitting the shank to be slid down over the pin 14 until it rests on the portion 11.. The shank 17 is of somewhat resilient material.

- After having been slid over the pin 14 the shank may be rotated on said pin until the hole 19 is above thepin 13, whereupon the shank maybe moved to position to fit snugly against the portion 11 .with the pin 13 extending through the wall above the shank 17.

be seen that the beveled edge 22 and shoul- 23 through the locking plate is alongitudinally, elongated slot 24.

On the under surface of the locking plate is a recess 25 designed to receive the end of the pin 13 which projects upwardly above the shank 17. The locking plate is of resilient material and the "recess 25 is slightly enlarged as the rear ed e of the handle when the parts are installed.

In the practical assembling of the parts of my improved device and the mounting of the tool or the like on the handle for use,

the handle is held substantially in the position shown in Fig. 1. The tool is grasped for instance by the blade 16 and laced on the portion 11 with the shank o the tool extending transversely across the portion- 11 and with the slot 20 arranged to register with the upper I end of the pin '14. The

1 shank is then dropped over the pin 13. and

' the counter-sunk portion is rotated until the hole 19 registers with the pin 14. The shank is then moved to position resting upon the portion 11, whereupon the flanges 15 will overhang thebody of the shank and will be slightly spaced above the shank.

, The locking plate 21 is then spaced above the shank 17 extending transversely across it, with the slot 24 registering with the pin 14. The slot 24 is dropped over the pin 14 nd the locking plate is then rotated until I the flanges 15 overhang and snugly engage I of the plate 21 adjacent to the slot 24.

The plate 21 is sprung over the pin 13 until the recess 25 registers with the upwardly projecting part of the pin 13 and at locking plate 21 in at 26 on the side thereof toward bling of the parts.

In order to further facilitate the disassembling of the parts, the forward edge of the lockm plate 21 is referably provided with a slig t recess for't e finger nail. f

The relative arrangement of the in 13 the recess 25, the beveled ed e 22 and shoul;

der 12 are such that when t e parts are assembled they are firmly and yi dingly held in locked position.

The advantages of such a device as is herein described may be largely seen from the foregoin description.

It is obvlous that with my improved handle, locking plate and shank a great variety of tools and instruments may be employed, such, for instance, as surgeons ,instruments, dentists instruments and the like.

It is not my intention to confine my invention to use with 'surgeonsknives, or any one class of instruments or tools.

It will be obvious that the sizes and proportions as well as the materials of the parts may be varied as may be desired for a great variety of purposes, and it is my intention to cover by my claim any modified forms of structure or use of mechanical equivalents which may be included within their scope.

I claim .as my invention:

beginning the disassem- In a device of the class described, the combination of a handle havin at one end a portion with a beveled shoul er, said portion having a projecting pin and having spaced therefrom a projecting pin having spaced from said portion, opposite laterally, ex-

ftending flanges, an instrument or tool member having a shank provided with a hole to receive said first pin and with an elongated slot to receive said second pin, 'a resilient locking plate having an elongated slot to receive said second pin, and a recess to receive the head of said first pin and having one edge adapted to be un er the ed e of said beveled shoulder when 'said last escribed slot and said recess recelve said pins.

Des Moines, Iowa, November 24, 1917.

- 7 JOHN M. LEE. 

